The 28-foot granite map plots the locations of 40 theaters in New York City.

A Manhattan office building is home to the world's largest chess board.

You don't have to be an ambassador to dine like one.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A very classy 1920s-era bar right in Grand Central Station.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

There must be a pun in this haystack somewhere...

A bit of retro transportation flair preserved in the world's largest department store.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Cryptic messages embedded in the New York City sidewalk.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

The notorious headquarters of a corrupt political machine.

Red frames showcase remnants of one of New York's original subway stations.